Intumescent fire blocks & covers

Fire rated intumescent ventilation blocks

Ventilation within buildings can contravene British Standards when installed into fire doors or compartment walls. One answer comes in the form of an intumescent block which allows air to flow through under normal conditions however closes under its own expansion when exposed to a fully developed fire.

We carry a wide range of standard sizes for immediate despatch, special sizes including circular are available upon request. Our ex stock range has a standard fire rating of up to 60 minutes, compliant with BS 476 Part 20:22. By design the this product offers very low maintenance as it contains no moving parts. For an air transfer grille which also offers smoke control please refer to our technical department.

Ventilation grill covers

Our range of ventilation covers offer an excellent robust ‘face fit’ option complementing the fire block range. The pressed steel covers are ‘zintec’ coated before painting to a satin anodised aluminium finish (may vary). The covers may be supplied to match any BS colour reference, please contact our technical help team to discuss special finishes.

Covers come punched with corner fixing holes. Fitting is via screws giving a solid appearance for a minimal expense.